JP2011017166A - Dismantling/assembling device for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dismantling/assembling device for a construction machine, which enables a worker to dismantle and assemble the construction machine easily in a short time.SOLUTION: In this dismantling/assembling device for the construction machine, a first cylindrical body 34 having a first pin hole 45 is provided in the center frame 1a of a lower structure 1, and a second cylindrical body 38 being internally and detachably fitted into the first cylindrical body 34 is provided on a lower face of a revolving device 3 supporting an upper structure 2 to revolve. When fitting the second cylindrical body 38 into the first cylindrical body 34 internally, a second pin hole 49 formed in the second cylindrical body 38 and the first pin hole 45 are aligned by a positioning means. A connection pin is inserted into the first pin hole 45 and the second pin hole 49 to fix the second cylindrical body 38 on the first cylindrical body 34.

Description

  The present invention relates to a disassembling and assembling apparatus for a construction machine, and more specifically, in a construction machine in which an upper turning body is installed on a lower traveling body via a turning device, and a work device is attached to the upper turning body. The present invention relates to an apparatus for disassembling and assembling the body and the upper swing body.

  Construction machines such as hydraulic excavators and pile drivers are disassembled and transported to the site due to restrictions on the height, weight, and capacity of the crane that can be used at the place to carry in, and restrictions on space. It may be necessary to assemble on site. For example, Patent Document 1 discloses a construction machine that disassembles a center frame of a lower traveling body and side frames with left and right crawler belts and disassembles and transports and assembles the center frame and a revolving device with an upper revolving body. ing. In the construction machine described in Patent Document 1, the center frame and the turning device are coupled using a large number of bolts, as is generally employed conventionally.

Japanese Patent Laid-Open No. 10-54052

  For example, in order to carry out work such as foundation work, expansion of a platform, or construction of an elevator in a station, it is necessary to carry the construction machine into a narrow space when the construction machine is carried into the platform. For this reason, the construction machine is disassembled and transported by a trailer truck or the like, and the disassembled components are carried onto the platform or the like using a relatively small crane and assembled on the platform or the like. After work, disassemble the construction machine again and carry it out of the platform using a crane.

  Thus, when working at the platform of a station using construction machines, the disassembled components are transported, loaded into the platform by a crane, assembled, worked at the platform, and then disassembled again. It is necessary to carry it out of the home. The operation time of the construction machine on such a platform is limited between the last train when the train does not travel and the first train. For this reason, assembly and disassembly of construction machines must be performed in a short time. However, as described above, the track frame of the conventional construction machine and the upper rotating body are coupled by a large number of bolts, and the positions of the holes into which the bolts are inserted are aligned, the bolts are tightened, or the bolts are The removal work takes a lot of time and labor. For this reason, there was a problem that the operating time of the construction machine was shortened.

  In view of the above problems, an object of the present invention is to provide a disassembly / assembly apparatus for a construction machine that can easily perform disassembly / assembly work in a short time.

A disassembly / assembly apparatus for a construction machine according to claim 1, comprising: a lower traveling body; an upper revolving body installed on the lower traveling body via a revolving device; and a work device attached to the upper revolving body. In the disassembly and assembly equipment of
A first cylindrical body provided in a center frame of the lower traveling body;
First pin holes provided at a plurality of locations of the first cylindrical body;
A second cylindrical body provided on a lower surface of the swivel device and detachably fitted to the first cylindrical body;
A second pin hole provided at a location corresponding to the first pin hole in the second cylindrical body;
Positioning means for matching the position of the second pin hole with the first pin hole when the second cylindrical body is fitted into the first cylindrical body;
And a connecting pin for fixing the second cylindrical body to the first cylindrical body by being inserted into the positioned first pin hole and the second pin hole.

The construction machine disassembly and assembly apparatus according to claim 2 is the construction machine disassembly and assembly apparatus according to claim 1,
As the positioning means,
A pair of first guide protrusions provided on both sides of the first pin hole on the inner peripheral surface of the first cylindrical body;
A second guide projection provided on an outer peripheral surface of the second cylindrical body, fitted in a vertically movable manner between the pair of first guide projections, and provided with the second pin hole; It is characterized by that.

The construction machine disassembly and assembly apparatus according to claim 3 is the construction machine disassembly and assembly apparatus according to claim 1 or 2.
A straight rod-like pin provided as the connecting pin;
A boss fixed to the first cylindrical body, at least a portion protruding outward from the outer surface of the first cylindrical body, and constituting the first pin hole;
A retaining pin hole provided in a radial direction in the connecting pin;
A retaining pin hole provided in a radial direction at a portion of the boss protruding outward from the first cylindrical body;
A retaining pin that is inserted into each retaining pin hole provided in each of the connecting pin and the pipe,
And a means for preventing the retaining pin from coming off.

The construction machine disassembly and assembly apparatus according to claim 4 is the construction machine disassembly and assembly apparatus according to claim 3,
A screw hole provided in the axial direction from the outer end of the connecting pin;
A bolt holder that surrounds the boss and has a tip abutting on the outside of the first cylindrical body, and has a bolt insertion hole at a location corresponding to the screw hole;
An adjustment bolt that has a head larger than the bolt insertion hole, is screwed into the screw hole of the connection pin through the bolt insertion hole, and moves the connection pin in the pulling direction by rotation; It is characterized by that.

  According to the first aspect of the present invention, the second cylindrical body is fitted to the first cylindrical body, and then the connecting pin is inserted into the first pin hole and the second pin hole from outside by striking or the like. Thus, the center frame of the lower traveling body and the turning device of the upper turning body can be assembled. For this reason, when assembling the upper swing body to the center frame, it is possible to easily assemble the assembly machine in a short time with little labor without using bolts, and the assembly of the construction machine can be easily performed in a short time. Further, since the center frame and the upper swing body can be disassembled by removing the connecting pin, disassembly can be easily performed in a short time with little effort. For this reason, it is possible to provide a construction machine suitable for use in a place where assembly and disassembly needs to be performed in a short time, for example, when working at a station platform. The time can be lengthened.

  According to the second aspect of the present invention, when the second cylindrical body is fitted to the first cylindrical body, the second cylindrical body is interposed between the pair of first guide protrusions provided on the first cylindrical body. By fitting the second guide protrusion provided on the first cylindrical body, the second cylindrical body is positioned with respect to the first cylindrical body, and the position of the second pin hole is matched with the first pin hole. Can do. For this reason, the pin hole can be easily aligned.

  Further, by fitting the second guide protrusion between the first guide protrusions, rotation of the second cylindrical body is prevented with respect to the first cylindrical body. It is possible to prevent the rotational force from acting on the connecting pin. For this reason, it is possible to avoid the occurrence of an accidental breakage of the connecting pin, and the connecting pin only needs to be strong enough to prevent the stopper from coming off in the vertical direction, so there is no need to use a large diameter and heavy weight. Small size that is easy to handle.

  According to the invention of claim 3, since a straight rod-like pin is used as the connecting pin and is configured to prevent the pin from coming off on the outer peripheral side of the first cylindrical body, the retaining pin is pulled out and the connecting pin is moved from the outside to the inside. The connection between the first cylindrical body and the second cylindrical body by the connecting pin can be released by punching out. For this reason, the operator can perform the disassembling work without entering the narrow space under the turning device, and the disassembling work becomes easy.

  According to the invention of claim 4, when the connecting pin is driven excessively from the outside, the bolt holder is applied to the outside of the first cylindrical body, the adjusting bolt is inserted from the bolt insertion hole of the bolt holder, and the screw of the connecting pin is It is possible to move the connecting pin in the pulling direction by screwing into the hole and turning the adjusting bolt. For this reason, even if the connecting pin is driven too far from the outside, the operator can move the connecting pin in the pulling direction without entering the narrow space under the swivel device, and the adjustment work of the insertion depth of the connecting pin Becomes easy.

It is a side view which shows the pile driver which is an example of the construction machine to which this invention is applied. It is a side view which shows one embodiment of this invention, and shows the state which has suspended the upper revolving body with the crane in the case of this disassembly of a pile driver. FIG. 3 is a front view of FIG. 2. It is a side view which shows the state which has suspended the working device with the crane in the case of the disassembly / assembly of this pile driver. It is a front view which shows the coupling structure of the lower traveling body and upper revolving structure of this embodiment in an exploded state. It is a front view which shows the coupling | bonding state of the lower traveling body and upper revolving body of this embodiment. It is a plane sectional view showing the combined state of the lower traveling body and the second cylindrical body of this embodiment. It is side surface sectional drawing which shows the coupling structure of the 1st cylindrical body and 2nd cylindrical body of this embodiment in an exploded state. It is a plane sectional view showing the pin insertion structure of this embodiment in the state before pin insertion. It is side surface sectional drawing which shows the connection state by the pin of the 1st cylindrical body of this embodiment, and a 2nd cylindrical body. It is a partial side view which shows the connection state by the pin of the 1st cylindrical body and 2nd cylindrical body of this embodiment. It is a side view which shows the extraction apparatus of the connection pin in this embodiment.

  FIG. 1 is a side view showing a pile driving machine which is an example of a construction machine to which the present invention is applied. In FIG. 1, 1 is a lower traveling body, 2 is an upper revolving body installed on the lower traveling body 1 via a revolving device 3, and 4 and 5 are an operating unit and a hydraulic power unit mounted on the upper revolving body 2, respectively. , 6 is a pile driving work device attached to the upper swing body 2.

  FIG. 2 shows an embodiment of the disassembling and assembling apparatus of the present invention, and when the pile driving machine is disassembled and assembled, a state in which the upper turning body 2 on which the operation unit 4 and the hydraulic power unit 5 are mounted is suspended. FIG. 3 is a front view of FIG. 2, and FIG. 4 is a side view showing a state in which the working device 6 is suspended by a crane. As shown in FIGS. 1 to 4, the lower traveling body 1 has side frames 1b attached to both sides of a center frame 1a, and is driven by a traveling motor (not shown) at the rear end of the side frame 1b. The wheel 1c is mounted, and a front wheel driven wheel 1d is attached, and a crawler belt 1e is wound around the driving wheel 1c and the driven wheel 1d.

  As shown in FIGS. 1 and 4, the working device 6 includes a lower frame 9 that is detachably attached to the upper swing body 2 by pins 7 and 8, and the lower frame 9 is inclined to the left and right by a hydraulic cylinder (not shown). The upper frame 10 is attached to the upper frame 10 and the reader 13 is attached to the upper frame 10 by a pin 12 so as to be tiltable in the front-rear direction. The reader 13 is attached to the lower reader 13a so as to be inclined by the pin 12, and is attached to the lower reader 13a so as to be inclined by the pin 14, and is fixed to the lower reader 13a by the pin 15, and may be divided into a plurality of parts if necessary. It consists of an upper leader 13b whose length is adjusted by adding the leader. Reference numeral 16 denotes a hydraulic cylinder which brings the leader 13 into a vertical posture and falls backward. The hydraulic cylinder 16 is attached between the leader 13 and the upper frame 10.

  A pair of guide members 17 are attached to the front portion of the reader 13, and an auger drive device 18 is mounted so as to be movable up and down along the guide members 17. The auger drive device 18 has a rotating disk (not shown) that is rotationally driven by a hydraulic motor 18a, and passes through a screw auger (not shown) through the rotating disk to rotate to a chuck device (not shown). It is fixed on the board and driven to rotate. A drive sprocket 19 is attached to the lower end of the reader 13 and is driven to rotate by a hydraulic motor 20. Reference numeral 21 denotes a driven sprocket attached to the upper end portion of the reader 13, and 22 denotes a sprocket chain wound around the driven sprocket 21 and the drive sprocket 19. An auger drive unit 18 is connected to the sprocket chain 22. Therefore, the auger drive device 18 can be moved up and down along the guide member 17 by rotationally driving the drive sprocket 19 by the hydraulic motor 20.

  A sheave device 24 is attached to the top of the reader 13 by a turning actuator (not shown) so as to be horizontally turnable. The sheave device 24 has a plurality of sheaves 26 to 28 for hanging a wire rope (not shown) wound and fed by a winch 25 attached to the upper swing body 2, and the screw auger is suspended by the wire rope. And suspension of existing piles.

  In this pile driving machine, the screw auger mounted on the rotating disk of the auger driving device 18 is rotated by the operation of the hydraulic motor 18a, and the auger driving device 18 is lowered by the operation of the hydraulic motor 20 to excavate the pit. . Then, after the length of one screw auger has been dug, a screw auger for suspension is suspended by a wire rope (not shown) suspended from the top of the leader 13 by a winch 25 through sheaves 26 to 28, and the auger is driven. The operation of excavating by adding to the preceding screw auger inserted through the device 18 is repeated as many times as necessary. And the existing pile piled up with the said wire rope is embedded in the excavated hole.

  As shown in FIGS. 2 to 4, in this embodiment, the pile driving machine includes a lower traveling body 1, an upper revolving body 2 that includes a swivel device 3 and is equipped with a driving unit 4, a hydraulic power unit 5, and the like. It is disassembled, transported and assembled by the working device 6. 2 to 4, 30 is a hook suspended from a wire rope 31 of a crane, and 32 is a wire rope that is hung on the upper swing body 2 and the work device 6 to be lifted and connected to the hook 30.

  Next, details of the disassembly and assembly apparatus of this embodiment will be described. FIG. 5 is a front view showing the joint structure of the lower traveling body 1 and the upper swing body 2 in an exploded state, FIG. 6 is a front view showing the joint state, and FIG. 7 is a plan sectional view showing the joint state. 5-7, 1a is the center frame of the lower traveling body 1, and 34 is the 1st cylindrical body fixed to the center of this center frame 1a by welding. Reference numeral 35 denotes an inner ring (fixed ring) of the turning device 3, and 36 denotes an outer ring (turning wheel) that is rotatably combined with the inner ring 35 via a bearing 37. The upper swing body 2 is fixed to the outer ring 36 with bolts (not shown). Reference numeral 38 denotes a second cylindrical body fixed to the lower part of the inner ring 35 of the turning device 3 by welding or bolting. The second cylindrical body 38 is detachably fitted to the first cylindrical body 34 with the following structure, and is fixed to the first cylindrical body 34 by pins 39.

  As shown in the side sectional view of FIG. 8, a ring 40 on which the second cylindrical body 38 is placed on the bottom surface of the first cylindrical body 34, and the inner periphery thereof is inside the inner peripheral surface of the first cylindrical body 34. To be welded. A ring-shaped bottom plate 41 placed on the ring 40 is welded to the bottom surface of the second cylindrical body 38.

  A plurality (in this example) for increasing the strength of the second cylindrical body 34 and preventing the second cylindrical body 38 from rattling with respect to the first cylindrical body 34 below the inner peripheral surface of the first cylindrical body 34. Then, four arc-shaped plates 42 are welded. The envelope circle on the inner peripheral surface of the plurality of arcuate plates 42 has a slightly larger radius than the circle formed on the outer peripheral surface of the second cylindrical body 38. The arcuate plate 42 constitutes a radial positioning means for the second cylindrical body 38.

  Reference numeral 43 denotes a guide provided on the arcuate plate 42 on the inner peripheral surface of the first cylindrical body 34. The guide 43 has a guide surface 43 a that is inclined so that the lower portion gradually protrudes inward, and the lower end portion of the guide surface 43 a of the guide 43 coincides with the inner peripheral surface of the arc-shaped plate 42. The guide 43 also serves as a rib that increases the strength of the first cylindrical body 34.

  Reference numeral 45 denotes first pin holes provided at a plurality of locations (in the present example, two locations on the front and rear sides) of the first cylindrical body 34. The first pin hole 45 is formed by a boss 46 provided through the first cylindrical body 34 so as to protrude outward from the outer peripheral surface of the first cylindrical body 34. In FIGS. 5, 6, and 9, reference numeral 47 denotes a pair of first guide protrusions provided on both sides of the first pin hole 45 on the inner peripheral surface of the first cylindrical body 34. As shown in FIGS. 5 and 6, the pair of first guide protrusions 47 are provided vertically and in parallel.

  Reference numeral 48 denotes a second guide protrusion provided on the outer peripheral surface of the second cylindrical body 38 so as to fit between the pair of first guide protrusions 47 and 47 so as to be movable up and down. As shown in FIG. 5, the second guide protrusion 48 is formed such that the left and right side surfaces are perpendicular and parallel to each other, and the lower surface of the second guide protrusion 48 is the first guide protrusion 47. , 47 are formed in an arc shape so as to be easily inserted between them. Reference numeral 49 denotes a second pin hole provided in a portion where the second guide protrusion 48 is formed, penetrating inward and outward. The second pin hole 49 is provided at a position corresponding to the first pin hole 45 when the second cylindrical body 38 is fitted to the first cylindrical body 34.

  As shown in the plan sectional view of FIG. 9, the connecting pin 39 of this embodiment is a straight bar-like pin that does not have an enlarged head. The connecting pin 39 is provided with a retaining pin hole 39a through which the retaining pin 51 is inserted in the radial direction. Further, a pin hole 46 a through which the retaining pin 51 is inserted in the radial direction of the boss 46 is also provided through a portion of the boss 46 protruding outward from the outer peripheral surface of the first cylindrical body 34. Further, a groove 46b for fitting a ring 52 for preventing the retaining pin 51 from being removed is provided over the entire circumference of the outer peripheral surface of the boss 46 where the retaining pin hole 46a is provided. The ring 52 has elasticity with a part of the entire circumference cut off.

  At the time of assembly, after the connecting pin 39 is inserted into the pin holes 45 and 49, as shown in FIGS. 10 and 11, the retaining pin hole 46a provided in the boss 46 and the connecting pin 39 are prevented from coming off. The retaining pin 51 is inserted into the pin hole 39a. Thereafter, the ring 52 is fitted into the groove 46b to prevent the retaining pin 51 from coming off. As a means for preventing the retaining pin 51 from coming off, a member (β pin) provided with an arc-shaped retaining portion on the retaining pin 51 itself may be used.

  FIG. 12 shows that when the connecting pin 39 is beaten from the outside of the first cylindrical body 34 and inserted into the pin holes 45 and 49, the pin hole 39 a for preventing the connecting pin 39 from accidentally is used to prevent the boss 46 from coming off. An apparatus for returning the connecting pin 39 in the pulling direction when it is pushed too far to a position deeper than the pin hole 46a is shown. This pulling device includes a screw hole 39b (see FIG. 11) provided in the axial direction from the outer end of the connecting pin 39, a bolt holder 54, and an adjusting bolt 55. The bolt holder 54 has, for example, a gate shape or a cylindrical shape surrounding the boss 46. The bolt holder 54 has a bolt insertion hole 54 a at a location corresponding to the screw hole 39 b of the connecting pin 39. The adjustment bolt 55 has a head portion 55 a that is larger than the bolt insertion hole 54 a of the bolt holder 54.

  The pulling device surrounds the bolt holder 54 around the boss 46 when the connecting pin 39 is excessively inserted when the connecting pin 39 is hit from the outside during assembly and inserted into the pin holes 45 and 49. And the tip of the bolt holder 54 is pressed against the first cylindrical body 34 and set, and the adjustment bolt 55 is inserted through the bolt insertion hole 54a of the bolt holder 54 and screwed into the screw hole 39b of the connecting pin 39. By rotating the adjusting bolt 55, the connecting pin 39 is moved in the pull-out direction. At this time, the connecting pin 39 has a diameter larger than that of the adjusting bolt 55, and the adjusting pin 55 is screwed with the screw hole 39b and rotated while the connecting pin 39 is prevented from rotating by contact with the pin holes 45 and 49. Therefore, the turning force of the adjusting bolt 55 can be used as the pulling force of the connecting pin 39, and the connecting pin 39 can be pulled out. The adjustment bolt 55 may be a butterfly bolt or the like that can be rotated by being gripped by an operator instead of the head 55.

  A center joint (not shown) that is a rotary joint for supplying hydraulic oil from the hydraulic pump of the hydraulic power unit 5 on the upper swing body 2 to the travel motor and the like of the lower travel body 1 is provided at the center of the swing device 3. Provided. A hydraulic hose (not shown) connected to the center joint is pulled out from the first cylindrical body 34 and the second cylindrical body 38 to the outside, so that the first cylindrical body 34 and the second cylindrical body 38 have As shown in FIG. 5, hose insertion holes 34a and 38a for passing hydraulic hoses are provided so that they are opposed to each other. As shown in FIG. 10, a lid 57 for closing the opening 41 a in the bottom plate is detachably attached to the bottom plate 41 of the second cylindrical body 38 by a bolt 58. The lid 57 has a hydraulic hose that passes through the hose insertion holes 34a and 38a from the second cylindrical body 38 after the second cylindrical body 38 is assembled to the first cylindrical body 34. 38 is prevented from hanging down from the inside.

  In this embodiment, as shown in FIGS. 2 and 3, when the upper swing body 2 is suspended by a crane and assembled to the lower traveling body 1, the second cylindrical body 38 is placed in the first cylindrical body 34. Suspend. At this time, the second guide projection 48 of the second cylinder 38 is operated and suspended so that the position of the second guide projection 48 is located between the first cylinders 47 and 47 of the first cylinder 34. During the suspension operation, the second cylindrical body 38 is guided because the lower side of the second cylindrical body 38 abuts against the guide surface 43a of the guide 43 of the first cylindrical body 34, so that the second cylindrical body 38 is guided. The center of 38 can be aligned with the center of the first cylindrical body 34. Further, the first guide protrusions 47 and 47 forming a pair of the first cylindrical body 34 are guided and lowered while the second guide protrusion 48 of the second cylindrical body 38 is sandwiched. When the bottom plate 41 of the second cylindrical body 38 is placed on the ring 40 of the first cylindrical body 34 by this suspension, the position of the second pin hole 49 matches the position of the first pin hole 45.

  In this way, after the positions of the pin holes 45 and 49 are matched, the connecting pin 39 is inserted from the pin hole 45 in the boss 46 into the pin hole 49 from the outside by striking or the like, thereby the center frame of the lower traveling body 1. Assembling of 1a and the turning device 3 of the upper turning body 2 can be performed. For this reason, it is possible to easily assemble in a short time and with little labor without using bolts. Further, the center frame 1a and the turning device 3 can be disassembled by removing the connecting pin 39, so that it can be easily performed in a short time without removing the bolt. For this reason, it is possible to provide a construction machine suitable for use in a place where assembly and disassembly needs to be performed in a short time, for example, when working at a station platform. The time can be lengthened.

  In this embodiment, when the second cylindrical body 38 is fitted to the first cylindrical body 34, the pair of first guide protrusions 47, 47 provided on the first cylindrical body 34 are arranged. By fitting the second guide protrusion 48 provided on the second cylindrical body 38, the second cylindrical body 38 is positioned with respect to the first cylindrical body 34, and the first pin hole 45 is inserted into the first pin hole 45. The positions of the two pin holes 49 can be matched. For this reason, the pin hole can be easily aligned.

  In addition, since the second guide projection 48 is fitted between the first guide projections 47 and 47, the rotation of the second cylindrical body 38 is prevented with respect to the first cylindrical body 34. Thus, it is possible to prevent the turning force from acting on the connecting pin 39 during turning. For this reason, it is possible to avoid the occurrence of a breakage accident of the connecting pin 39, and the connecting pin 39 only needs to be strong enough to prevent the stopper from coming off in the vertical direction. This eliminates the need for a small product that is easy to handle.

  Further, in this embodiment, a straight rod-like pin is used as the connecting pin 39, and this is configured to be retained by the retaining pin 51 on the outer peripheral side of the first cylindrical body 34, so that the first cylindrical body 34, the retaining pin 51 is removed from the state in which the second cylindrical body 38 is connected to the connecting pin 39, and the connecting pin 39 is punched from the outside to the inside, whereby the first cylindrical body 34 and the second The connection with the cylindrical body 38 can be released. For this reason, the operator can perform the punching work to the outside by striking the connecting pin 39 without diving into the narrow space under the swivel device 3, and the disassembling work is facilitated. When punching out the connecting pin 39, the cover 58 shown in FIG. 10 is removed, and the connecting pin 39 punched inward is dropped onto the ground.

  As shown in FIG. 12, in this embodiment, when the connecting pin 39 is excessively driven from the outside, a pulling device that can pull the connecting pin 39 to a suitable position is provided. Even when the driver is driven too far from the outside, the operator can move the connecting pin 39 in the pulling direction without diving into the narrow space under the swivel device 3, and the adjustment work becomes easy.

  In the above-described embodiment, an example in which two connecting pins 39 are used, one on each of the front and rear sides of the center frame 1a, has been shown. However, three or more connecting pins 39 may be used. Further, in the above embodiment, the example in which the side frame 1b is transported with the side frame 1b attached to the center frame 1a in the lower traveling body 1 has been described. It can also be applied when disassembled and transported and assembled on site. The present invention can also be applied when the lower traveling body is a wheeled traveling body. Further, in the above embodiment, the case where the construction machine is an excavator having an auger drive device has been described. However, the present invention is applicable to other various construction machines in which the upper swing body is installed on the lower traveling body. Is possible.

1: Lower traveling body, 1a: center frame, 1b: side frame, 1c: driving wheel, 1d: driven wheel, 1e: crawler belt, 2: upper turning body, 3: turning device, 4: hydraulic power unit, 5: driving part , 6: work device, 7, 8: pin, 9: lower frame, 10: upper frame, 12: pin, 13: leader, 14, 15: pin, 16: hydraulic cylinder, 17: guide member, 18: auger drive Device: 18a: Hydraulic motor, 19: Drive sprocket, 20: Hydraulic motor, 21: Driven sprocket, 22: Sprocket chain, 24: Sheave device, 25: Winch, 26-28: Sheave, 30: Hook, 31, 32: Wire rope, 34: first cylindrical body, 34a: hose insertion hole, 35: inner ring, 36: outer ring, 37: bearing, 38: second cylindrical body, 38a: hose insertion hole, 39 Connecting pin, 39a: pin hole for retaining, 39b: screw hole, 40: ring, 41: bottom plate, 42: arc plate, 43: guide, 45: first pin hole, 46: boss, 46a: for retaining Pin hole, 46b: groove, 47: first guide protrusion, 48: second guide protrusion, 49: second pin hole, 51: retaining pin, 52: ring, 54: bolt holder, 54a: bolt insertion Hole, 55: Adjustment bolt, 55a: Head, 57: Lid, 58: Bolt

Claims (4)

In a disassembling and assembling apparatus for a construction machine, comprising: a lower traveling body; an upper revolving body installed on the lower traveling body via a revolving device; and a working device attached to the upper revolving body.
A first cylindrical body provided in a center frame of the lower traveling body;
First pin holes provided at a plurality of locations of the first cylindrical body;
A second cylindrical body provided on the lower surface of the swivel device and detachably fitted to the first cylindrical body;
A second pin hole provided at a location corresponding to the first pin hole in the second cylindrical body;
Positioning means for matching the position of the second pin hole with the first pin hole when the second cylindrical body is fitted into the first cylindrical body;
A construction machine comprising: a connecting pin that is inserted into the positioned first pin hole and the second pin hole and fixes the second cylindrical body to the first cylindrical body. Disassembly and assembly equipment. The disassembling and assembling apparatus for a construction machine according to claim 1,
As the positioning means,
A pair of first guide protrusions provided on both sides of the first pin hole on the inner peripheral surface of the first cylindrical body;
A second guide projection provided on an outer peripheral surface of the second cylindrical body, fitted in a vertically movable manner between the pair of first guide projections, and provided with the second pin hole; A disassembling and assembling apparatus for construction machinery characterized by the above. The construction machine disassembly / assembly apparatus according to claim 1 or 2,
A straight rod-like pin provided as the connecting pin;
A boss fixed to the first cylindrical body, at least a portion protruding outward from the outer surface of the first cylindrical body, and constituting the first pin hole;
A retaining pin hole provided in a radial direction in the connecting pin;
A retaining pin hole provided in a radial direction in a portion protruding outward from the first cylindrical body in the boss;
A retaining pin that is inserted into each retaining pin hole provided in each of the connecting pin and the pipe,
A disassembling / assembling apparatus for a construction machine, comprising: a means for preventing the retaining pin from coming off. The disassembly / assembly apparatus for a construction machine according to claim 3,
A screw hole provided in the axial direction from the outer end of the connecting pin;
A bolt holder that surrounds the boss and has a tip abutting on the outside of the first cylindrical body, and has a bolt insertion hole at a location corresponding to the screw hole;
An adjustment bolt that has a head larger than the bolt insertion hole, is screwed into the screw hole of the connection pin through the bolt insertion hole, and moves the connection pin in the insertion / removal direction by rotation; A disassembling and assembling apparatus for construction machinery.

Images